MOD = 10**9 + 7

def matrix_mult(a, b):
    return [
        [
            (a[0][0] * b[0][0] + a[0][1] * b[1][0]) % MOD,
            (a[0][0] * b[0][1] + a[0][1] * b[1][1]) % MOD
        ],
        [
            (a[1][0] * b[0][0] + a[1][1] * b[1][0]) % MOD,
            (a[1][0] * b[0][1] + a[1][1] * b[1][1]) % MOD
        ]
    ]

def matrix_pow(mat, power):
    result = [[1, 0], [0, 1]]  # Identity matrix
    while power > 0:
        if power % 2 == 1:
            result = matrix_mult(result, mat)
        mat = matrix_mult(mat, mat)
        power //= 2
    return result

def fib(n):
    if n == 0:
        return 0
    if n == 1:
        return 1
    mat = [[1, 1], [1, 0]]
    return matrix_pow(mat, n-1)[0][0]

n = int(input())
if n == 1:
    print(1)
elif n % 2 == 0:
    k = n // 2
    print(fib(k + 1) % MOD)
else:
    k = (n - 1) // 2
    print(fib(k + 1) % MOD)